649051504 has 20 divisors (see below), whose sum is σ = 1262186080. Its totient is φ = 323326080.

The previous prime is 649051489. The next prime is 649051519. The reversal of 649051504 is 405150946.

It is an interprime number because it is at equal distance from previous prime (649051489) and next prime (649051519).

It is a self number, because there is not a number n which added to its sum of digits gives 649051504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70509 + ... + 79180.

It is an arithmetic number, because the mean of its divisors is an integer number (63109304).

Almost surely, 2^649051504 is an apocalyptic number.

It is an amenable number.

649051504 is a deficient number, since it is larger than the sum of its proper divisors (613134576).

649051504 is a wasteful number, since it uses less digits than its factorization.

649051504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149968 (or 149962 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 649051504 is about 25476.4892400817. The cubic root of 649051504 is about 865.8175544201.

The spelling of 649051504 in words is "six hundred forty-nine million, fifty-one thousand, five hundred four".